Bridge Grating Solutions Components & Systems

Chicago, IL The historic LaSalle Street Bridge in the heart of Chicago was built in 1928, and a new riveted steel bridge deck was put in service during a 1971 renovation project. This busy bridge is exposed to an annual average daily traffic of about 27,000 vehicles per day. An inspection in September 2010 demonstrated that the riveted grating is still providing good service after nearly 40 years of heavy use. Vehicular Bridges Heavy Duty Riveted Grating Riveted grating was first developed and used in subways in New York City in the early 1900’s. Over the years this product has been used in various...

Types of Riveted Grating: Standard 37R5 Below is our original heavy duty riveted grating with bearing bars spaced at 2-5/16” face to face and joined by a connecting (reticuline) bar using rivets at 5” centers. This connection forms a truss-like grid which is best suited to handle the high impact and lateral forces encountered in bridge deck applications. Heavy Duty Riveted continues to be the choice of many engineers due to its reliability and durability. Bearing Bars Connecting Bar Optional Banding at End of Span Panel Span 37R5 Section View Bearing Bars Panel Depth 2-5/16” Connecting Bar The...

Types of Riveted Grating: 37R5 Lite For applications requiring an even lighter weight product per square foot, OGI offers our 37R5 Lite. It is up to 30% lighter than our standard riveted product and can be used for applications requiring concrete filled decking. Over 26,000 SF of 37R5 Lite serrated 5” x 3/8” riveted grating with a galvanized finish was used on the Grosse Ile bridge deck portion of the project pictured to the bottom right. 37R5 Lite Overview Intermediate Bars between Bearing Bars Optional Banding at End of Span 1” x 1/4” Transverse Bars Spaced at 15” on Center (typ.) This project...

Types of Riveted Grating: L-Series OGI’s R&D department constantly reviews existing product lines looking for ways to improve. In the case of our riveted designs, a new “L” shape bearing bar was developed for applications where supports are further apart. The wider spacing between bearing bars keeps the weight per sq. ft. down while meeting loading requirements. This new design will give years of service at a reasonable cost. Alva, FL Ohio Gratings, Inc. completed this project in July of 2010. The grating panels covered the two leafs of a 2,900 square foot Bascule Bridge. Because the supports...

Chicago, IL Stearns Quarry was originally an active limestone quarry from 1830 to1969 and in later years was used as a landfill. This area was recently transformed into a 27 acre park including athletic fields, a running track, sledding mound, fishing pond/pier and an elevated walking structure for viewing of the quarry. The designers of this project required an open metal type decking system to provide an ADA Compliant walking surface, but to also allow for pedestrians to view the water, grasses and landscaping through the decking. OGI’s Aluminum LiteBar® (11SGLi4) was chosen and over 11,000...

St. Matthews, KY Bear Grass Creek Nature Preserve is a 12 acre park which acts as a buffer between residential neighborhoods and a shopping mall that is split by Bear Creek, a tributary of the Ohio River. The original design of the wetlands was incorrectly graded, so in order to correct this to decrease flooding, the entire area underwent a topography change. This area was turned into a nature preserve which included a park and nature trails. Over 3,000 SF of close mesh Carbon Steel DoveTail Grating (galvanized with a SlipNot finish) was used to make this park accessible to all residents, complying...

Laboratory Testing Results for Heavy Duty Riveted Grating In early 2009, OGI performed Static and Fatigue testing at the University of Akron in Ohio. The riveted grating panels were tested under “worst case” load conditions by considering the maximum support spacing under the H-20 Heavy Duty AASHTO load including impact. For the Fatigue test, the grating exceeded 1,300,000 cycles of this extreme worst case loading. The laboratory testing confirms that the heavy duty riveted bridge deck can be relied upon to provide decades of service even when exposed to continuous heavy truck loading. If you...